Fat-Free Mass Index (FFMI) is a calculation that accounts for your muscle mass relative to your height. Unlike BMI, it uses your body fat percentage to determine how much of your weight is lean muscle.

What is a 'natural' FFMI limit?

Research by Kouri et al. suggests that a normalized FFMI of 25 is the upper limit for the vast majority of natural (drug-free) athletes. Scores significantly above 25 are rarely achieved without the use of performance-enhancing drugs or exceptional genetics.

How is Maximum Muscular Potential estimated?

This tool uses formulas developed by researchers like Casey Butt, which use bone structure (wrist and ankle circumference) as an indicator of your frame's capacity to support muscle mass.

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Analizzatore Potenziale Muscolare e FFMI

Il riferimento definitivo per i bodybuilder. Calcola il tuo indice di massa libera dal grasso (FFMI) e stima il tuo limite genetico naturale.

Body Stats

Peso Attuale (kg)

Altezza (cm)

Grasso Corporeo (%)

15%

Bone Structure (For Potential)

Circonferenza Polso (cm)

Circonferenza Caviglia (cm)

FFMI Normalizzato

21.0

Stato Bodybuilding

Intermedio / Atletico

Massa Magra

68.0 kg

Max Potential

46.7 kg

Consiglio Bodybuilding

L'FFMI è più utile dell'IMC per gli atleti. Un punteggio normalizzato superiore a 25 è spesso considerato il 'limite superiore' per la maggior parte degli atleti naturali.

FFMI Scale

18-20: Average. 22-23: Distinctly muscular. 25-26: Extremely muscular (Upper limit for most natural athletes). 26+: Exceptional/Genetic outlier.

Medical Disclaimer: This tool is for educational and informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.